UFO: Season 1, Episode 10

The Square Triangle (9 Dec. 1970)

TV Episode  |   |  Action, Sci-Fi
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Ratings: 7.7/10 from 44 users  
Reviews: 3 user | 1 critic

Liz Newton and her lover Cass are planning the murder of Liz's husband Jack. A UFO craft lands near to her remote woodland cottage and an alien gets out to explore the surroundings. ... See full summary »



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Title: The Square Triangle (09 Dec 1970)

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Episode cast overview, first billed only:
Liz Newton
Dolores Mantez ...
Nina Barry
Joan Harrington
Gary Myers ...
Skydiver Capt. Lew Waterman
Keith Alexander ...
Lt. Keith Ford
Michael Billington ...
Patrick Mower ...
Cass Fowler
Ayshea Brough ...
SHADO Operative (as Ayshea)
George Sewell ...
Col. Alec Freeman
Hugo Panczak ...
SHADO Mobile Navigator
Godfrey James ...
Game Warden Mitchell
Anthony Chinn ...
Allan Cuthbertson ...
Jack Newton


Liz Newton and her lover Cass are planning the murder of Liz's husband Jack. A UFO craft lands near to her remote woodland cottage and an alien gets out to explore the surroundings. Believing the alien to be Jack, Liz and Cass shoot and kill it. Straker arrives in search of the alien and takes the couple away for questioning. Written by don @ minifie-1

Plot Summary | Add Synopsis


Action | Sci-Fi





Release Date:

9 December 1970 (UK)  »

Company Credits

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Technical Specs



Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


Keith Alexander is dubbed by Robert Rietty. See more »


After being ordered not to engage the UFO, the Interceptors back off. But, all three do not have their missiles attached, whereas in a previous scene they did have them. So, if ordered to not engage, what happened to their missiles? See more »

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User Reviews

A comment on the first review
17 June 2011 | by (United States) – See all my reviews

I recently borrowed the entire series on DVD, and I saw this episode a few nights ago. I was curious what other viewers thought, so I checked the ratings and reviews on IMDb. I find myself disagreeing with the first review. It wasn't from lack of cleverness that the writers and producers chose this particular ending. They intended the ending they wrote, and they didn't want another ending.

I don't want to give away details, but Straker is shown to be a man on a mission. It's common these days to portray such men as having a streak of ruthlessness and being somewhat morally ambiguous. However, this series was made in the era of bold Star Trek and early Dr. Who, when leaders and action heroes on TV were usually portrayed in a more noble, mythic light. Straker, on the other hand, is a man who has felt the burden of protecting the world, and that is his top priority. He does what is necessary, regardless of the cost. Looked at in that way, the ending while disturbing, is meant to be disturbing. Remember, it's supposed to bother you. IMHO, this is actually one of the better episodes of the series.

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